Photographic-studio-lighting apparatus.



E. GOLDENSKY & P. H. BARTLETT. PHOTOGRAPHIC STUDIO LIGHTING APPARATUS.

APPLICATION FILED FEB. 2, 1914.

1,150,028. Patented Aug. 17,1915.

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PHOTOGRAPHIC-STUDIO-LIGHTING APPARATUS.

Specification of Letters Patent.

Patented Aug. 17, 1915.

Original application filed August 17, 1912, Serial No. 715,557. Divided and this application filed February 2, 1914. Serial No. 815,899.

To all whom it may concern Be it known that we, ELIAs GOLDENSKY and PERCY H. BARTLETT, citizens of the United States, residing in Philadelphia,

county of Philadelphia, and State of Pennsylvania, have invented new and useful Improvements 'in Photographic-Studio-Lighting Apparatus, of which the following is a specification.

Our invention relates to photographic apparatus and'a system particularly adapted to studiophotography, whereby the photographer is independent of daylight and depends upon artificial lighting of his subjects.

Our, invention resides in means for adjustably supporting a plurality of sources of light in such manner that the sources may be brought close together or spread apart so as to procure a substantially concentrated source of light of great intensity or an expanded source of light of less intensity. And in this connection we provide means for reflecting the light of the individual sources in any desired direction.

Our invention resides in the features hereinafter described and claimed.

For an illustration of some of the forms our invention may take reference is to be had to the accompanying drawings, in which:

Figure 1 is an elevational view of a plurality of light. sources movable toward and away from each other for securing variation in concentration of light. Fig. 2 is an ele- Yation'al view of modified means for securing more or less similar effects. Fig. 3 is a vertical sectional view, some parts in elevation, illustrating means for permitting adjustment of the reflector with respect to the lamp.

Referring to Fig. 1, L, L represent incandescent electric lamps, each provided with a reflector R rotatable upon the lamp socket about the vertical axis of the lamp, the lamp socket, reflector and lamp being supported upon a tubular member 1 through which electrical conductors extend into the lamp socket for supplying the lamp with current. These :tubular members are supported preferablyat the pivotal points of the bars or rods 2 of a lazy tong or pantograph frame. livoted at points 3, 3 are rods or tubes l which telescope one within the other or within the tubes 5 as the frame .55' is extended longitudinally or compressed longitudinally. Side bars 6 are suitably supported to the frame and upon either of these side bars may be mounted a second frame, as indicated at the right of Fig. 1, whose plane is adjustable to different angles with respect to the plane of the main frame, this second frame also carrying lamps L, L. The frames may be held upon any suitable support such, for example, as the vertical memher 7 having the'longitudinal slot 8 in which it may be vertically adjusted and clamped as by a wing nut 9 to the member 7. Suitable conductors extend to all the lamp sockets through the members 1 so that all the lamps may simultaneously glow, though, if preferred, some of the lampsmay be extinguished by the usual key on the lamp socket. Suitable circuit terminals 17 in the form of plugs, or other suitable form, are provided for leading current to the lamps. By spreading the frame out longitudinally the light sources will be spread longitudinally, and though they approach each other slightly vertically, the effect is to secure such distribution of light as to give softer or less intense illumination on the subject. The side frame may also be so adjusted longitudinally independently of the main frame so that the light coming from-the side frame may be adjusted independent of the light from the main frame. The reflectors are all movable upon their sockets, as stated, so that any desired efl'ect of the light to the subject may be secured.

In Fig. 2 the two frames 10 and 11 are hinged to each other at 12 and 13 and carry lamps, reflectors and sockets similar to those in Fig. 1, but in this case. the lamps on each frame maintain their relative positions. By

swinging the frames with respect to each other the change in intensity of lighting of the subject is obtainable. These frames may be supported upon a suitable upright 7 havinga collar 1 f upon which the frames rest and with respect to which they may be rotated. Here again an end frame, such as 15, is provided and may be supported either at the left, as indicated in Fig. 2, or upon the hinge pins 16 at the right of the frame 10. The frame 15 may be swung to different positions with respect'tothe frame to which it is attached to change the lighting upon the subject coming from a different angle from the light from the main frames 10 and 11. Suitable circuit terminals 17 in the form of pro plugs, or other suitable form, are provided for leading current to the lamps. And the plug '17 at the upper righthand corner of the frame 11 is employed for making connections to the lamps on the frame 15 when that frame is supported on the frame 10. Here again by swinging the frames With respect to each other different degrees of lighting coming from different directions may be secured for lighting the subject.

The lights in the center of the main frame, [either Figs. 1 or 2, are relatively high candle power, for example, 100 watt lamps; immediately beyond them are located lamps of low candle power, for example, watt lamps; and beyond these the surrounding lamps arestill less candle power, for example, 40 watt-lamps. And the 'arrangement is such that the'effect is an elliptical or substantially elliptical field of light with the center of maximum candle power, the candle power of the lamps diminishing in all directions away from the center of the ellipse.

This application is a division of ourprior application for Letters Patent of the United States Serial Number 715557, filed August 17 1912, which has matured into Patent'No. 1,088,695, March 3, 1914:.

"In Fig. 3 one of many'forms of means for a't-ji'isting' the reflectors "R upon their sockets or lamps is shown. Upon the lamp socket S is a resilient ring member r having a flange f uponwhich the reflectorR may be rotated toany position about the axis of the lamp L.

What we claim is:

1. Photographic studio lighting apparatus comprising a fr'ame,a plurality of parallel members crossing and pivoted to a plurality of parallel -n1embers, "and a bank of light sourcescar'ried by said members, pivotal movement of said members with respect to "each other producing relativeeq'ual and similar. movements between said light sources throughout said bank.

2. 'fPhotogra hic studio lighting apparatus comprising a rame,a plurality of parallel members crossing and'p'ivoted toa plurality of parallel'memb'ers, a bank oflight sources carried by' sa'id members, pivotal movement of said'members with respect to each other producing relative equal and-similar -movements between "said light sources throughout said bank, a second bank of light'sources, a support therefor, and a'pivotal connection between saids'upport and said frame'for varying the angle between said banks of light sources.

3. Photographic studio lighting apparatus comprising a frame, a"plurality of parallel producing relative equal and similar movements between said light sources throughout said bank, and reflectors for said sources individually adjustable with respect to each other.

4. Photographic studio lighting apparatus comprising a lazy tong frame distortable by similar and equal movements throughout its extent, a bank of incandescent lamps distributed over said frame and supported thereby, whereby distortion of said frame adjusts the intensity of lighting.

5. As a composite source of light for photography, aplurality of incandescent electric lamps,'a lazy tong frame supporting the same, and a second lazy ton-g frame adjustable to different angles with respect to said firstnamed frame, and a plurality of incandescent electric lamps supported by said second frame. v

6. Photographic studio lighting apparatus comprising a support, flat frames rigid against movement out of their planes carriedthereby, a bank of electric lamps carried by and distributed over each frame, circuit connections for said lamps, and a pivotal connection between said frames for varying the angle between said banks of lamps toadjust direction and-intensity of lighting.

7 Photographic studio lighting apparatus comprising -"a support, fl'at frames rigid against movement out of their-planes movable about a vertical axis thereon, a vertical bank of electric lampsearried by and distributed over each of said frames, circuit connections on each ofsaid frames, and a pivotal connection between said frames for varying the angle between said-banks of lamps.

8. Photographic studio lighting apparatus 'compris'ing'flat frames, a bankof electric lamps carried'by and distributed over said frames in a substantially flat field, circuit "connections for said lamps, reflectors for said lamps 1 adjustable with respect thereto, and a pivotal conne'ction between said frames for varying the angle between said banks of lamps.

9. Photographic studio lighting apparatus comprising substantially flat vertical frames, a vertical bank of electric lamps carried by each 'of said frames, circuit terminals for said lamps, and-a pivotal connection between *said frames for varying the angle b'etween'said banks of lamps,-one'of said frames being-disto'rtable for-adjusting the distance between the-lamps carried thereby for changing the intensity of lighting producedby thelamps on said frame.

10; Photographic studio lighting apparatus comprising substantially fiat frames, a bank of electric lamps carried by each of saidframer -and a pivotal connection between said frames for varying the angle between said banks of-lamps, said frames being distortable in their planes for adjusting the distance between the lamps carried thereby for changing the intensity of lighting.

11. Photographic studio lighting apparatus comprising a vertical standard, a vertical frame carried thereby, a vertical frame pivoted on a vertical axis at each side of said frame, said frames being flat and rigid against movement out of their planes, and a plurality of lamps distributed over each of said frames.

12. Photographic studio lighting apparatus comprising a lazy tong frame, a plurality of incandescent electric lamps, and sockets for said lamps secured to pivots of saidframe.

l3; Photographic studio lighting appa ratus comprising flat frames pivoted to each other for varying the angle between them, a bank of electric lamps carried by and distributed over each of said frames, a central lamp of one of said banks being of predetermined candle power, other lamps of said bank decreasing in candle power with their distance from the center of said bank.

14. Photographic studio lighting apparatus comprising flat frames pivoted to each other for varying the angle between them, a bank of electric lamps distributed over each of said frames, one of said banks comprising a plurality of incandescent lamps of different candle powers, said lamps being so disposed that the greatest candle power is at a central area of an elliptical field, the candle power decreasing with distance from said central area.

In testimony whereof we have hereunto afiixed our signatures in the presence of the two subscribing witnesses.

ELIAS GOLDENSKY. PERCY H. BARTLETT.

Witnesses:

A. S. MARsH, N. B. EVANS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

